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New England Ropes STS (stronger than steel) uses a precisely controlled rotation, heating, and tensioning process to heat set high-modulus Polyethylene fibers and balance loads across the ropes' shorter and longer fibers. On a microscopic level, the process straightens molecular chains for higher specific tensile properties resulting in over 25% more breaking strength and 90% less stretch than its competition at equal diameters.

Common Applications:

Common applications for uncovered Heat Set Dyneema include steering cables, backstays and other applications that need high strength, low stretch and greater durability than Vectran.

Common applications when the line is installed with a cover include main and headsail halyards - especially on big boats, afterguys and asymmetrical tack lines.

Hand/feel:

Heat Set Dyneema is very slick and stiff and feels almost like wire.

Cover Material: No cover

Core Material: Heat Set Dyneema SK-78

The 100% Dyneema construction paired with the temperature and tensioning process creates a high strength, super durable line. Will stand up on end due to the heat set construction.

End Termination: Melted

Ends can be melted but the line doesn’t melt together as well as polyester. However, Dyneema will fuse together and the tight weave will limit fraying.

I used this line in 5/32 for the main halyard and back stay on a Holder 20 I was rigging.
This line is very stiff. The splices were easy to make. I would recommend thimbles, I size the loop at the top of the back stay for a thimble but did not use it first time we tried it, after we took the mast down I noticed that weave did not look right were it went around the pin, too tight of a bending radius so I installed the thimble and it looked much better. I used a thimble and soft shackle on the main halyard.
Since the main halyard is on a horn cleat I did not cover it but would recommend a cover for a cam cleat or a clutch.

What do you like about this item?:

high strength low strech

What do you dislike about this item?:

This line is stiff

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Video Transcript

Hi, this is Kyle from APS and I'm here to share with you some of the characteristics of Heat Set Dyneema Line by New England Ropes.

This is a heat set. Basically it's a DSK 78, and while under tension, the heat set this. Why would they do that? Some of the fibers may not, during the braiding process of making the line, may have not been under full tension or in alignment. While stretching it and applying heat, they're allowing the line to basically do a little bit of pre-creep, and it aligns all the fibers such that right off the spool, this has been optimized. It is at the peak of its performance in terms of a DSK 78.

Why would you choose this? You want very high strength, low creep. Because it's Dyneema it has very high abrasion resistance, so it's gonna be better than Vectran in terms of abrasion resistance. We see this used on big boat, and small boat, but mostly big boat halyards, headsail, main, afterguys, things like that where you want no movement and you want something that's very durable. This is something that we would add covers to in the areas that they are handled, clutched, cleated, and winched. That should be done to your specifications. It's available in the one color. It's available in 5/32” all the way up to 3/8”. It is very stiff off the spool, but once you've worked with it a while, it starts to break in and it turns itself back into a normal-feeling single braid, so much softer all of a sudden here.

This is the 5/32”, and braid angle on that. Got the 3/16”, gonna loosen this coating up, and kind of a medium braid angle, medium to tight. Break some of the coating up off of this, here we go. This is up into the ¼”. Here we jump into 9/32”.

This is Heat Set Dyneema Line by New England Ropes. For these and all of your line needs, visit us at APSltd.com.